1. May 17, 1792, marks the day when New Hampshire ratified the United States Constitution and became the ninth state to join the Union. The legacy of this historic event is celebrated every year on Constitution Day.

2. On May 17, 1887, the Exeter County Club was established in Exeter, New Hampshire, making it one of the oldest golf clubs in the United States. The club has hosted several prestigious golf tournaments and boasts a challenging 18-hole course.

3. May 17, 1909, is the day when the New Hampshire State Library opened its doors to the public. Today, the library is a valuable resource for researchers, students, and individuals seeking information about the state's history, government, and culture.

4. May 17, 1976, marked the end of a long-standing dispute between New Hampshire and Maine over the ownership of the Isles of Shoals, a group of small islands off the coast of New Hampshire. The United States Supreme Court finally ruled that the islands belong to New Hampshire.

5. On May 17, 2003, NASCAR driver Jimmie Johnson won the Busch Series race at the New Hampshire Motor Speedway in Loudon, New Hampshire. This was Johnson's second career win in the Busch series, and it paved the way for his successful career in the NASCAR Cup Series.